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Finding the Fourth Proportional to 79,264.80, 119,045.44 and 69,780.64

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Solution

The fourth proportional to 79,264.80, 119,045.44 and 69,780.64 is: 104,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,264.80 : 119,045.44 = 69,780.64 : x
  2. Step 2: Convert to fraction form
    79,264.80/119,045.44 = 69,780.64/x
  3. Step 3: Cross multiply
    79,264.80x = 119,045.44 × 69,780.64
  4. Step 4: Simplify right side
    79,264.80x = 8,307,066,992.28
  5. Step 5: Solve for x
    x = 8,307,066,992.28/79,264.80
  6. Step 6: Final answer
    x = 104,801.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.